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Imperial Mining Receives Final Crater Lake Drill Results: Data Sent to Engineers for 43-101 Resource Estimation on TG Zone

Drill Results

Imperial Mining Receives Final Crater Lake Drill Results: Data

Sent to Engineers for 43-101 Resource Estimation on TG Zone

Highlights:

• Assay results from the first four drillholes continue to return impressive intercepts of 99.8 m (327.3’) grading

299 g/t scandium oxide (Sc 2O3), including 24.2 m (79.4’) grading 331 g/t Sc 2O3 and 77.3 m (253.5')

grading 313 g/t Sc2O3.

• Elevated levels of total rare earth oxides plus yttrium (TREO+Y) of up to 0. 46 % characterize the

scandium-bearing intercepts.

• All drill assays have been received and the data has been transferred to our engineering group to complete

the 43-101 resource estimation work on the TG Zone.

MONTREAL, QUEBEC – June 23, 2021 – Imperial Mining Group Ltd. ("Imperial") (TSX

VENTURE: IPG; OTCQB: IMPNF) is pleased to announce that it has received the final batch of assays

from the winter definition drill program on the Crater Lake TG scandium mineralized Zone (the “Zone”).

Assay results continue to return substantial intersection widths of scandium- and rare earth-bearing olivine

ferrosyenite (Table 1) reported earlier (s ee Imperial press releases – April 28th and May 27 th, 2021). A

delay on delivery of the final results from the laboratory will push the date of the completion of the resource

estimation into July but remains within anticipated delivery expectations.

“The final drilling results at the Crater Lake property co ntinue to show consistently high grade and wide

scandium and rare earth intersections over the entire TGZ mineralized system,” said Peter Cashin,

Imperial’s President & Chief Executive Officer. “We are now in the process of delivering the project data

to our consultants to commence 43-101 resource estimation work. Having drilled the northern lobe on 50

m centres, we believe that a portion of the resource will provide indicated as well as inferred category

resources. With the resource estimation in hand, lik ely in July, and completion of our metallurgical

flowsheet, we will commence work on delivering a Preliminary Economic Assessment (PEA) for the

project some time this fall, as originally scheduled.”

DRILLING PROGRAM

In total, 14 drillholes for 2,084.8 m ha ve been completed (Table 2, Figures 1 , 2 and 3 ). All drillholes

intersected the target mafic intrusive host rock which show a high degree of grade homogeneity. The drilling

indicates that the TG scandium zone is doubly dipping between 830 west to 700 east, with a north-northeast

strike direction. The widths of the mineralized zone vary between 55 and 135 m (180 -443’) in true

thickness. Mineralization is open at depth below the 200 m vertical level and along strike and appears as a

thickening, conical-shaped body in cross-section.

Table 1 – Best Drillhole Assay Results, Crater Lake Project, Quebec

Hole # From (m) To (m) Interval

(m) Sc (g/t) Sc2O3 (g/t) TREO+Y

(%)

CL21046 107.15 160.60 53.45 172 264 0.3258

Incl. 107.15 125.65 18.50 187 287 0.3382

CL21049 38.00 115.43 77.43 204 313 0.3441

Incl. 49.00 76.00 27.00 215 330 0.3478

And incl. 83.50 98.50 15.00 220 337 0.3580

CL21050 45.63 53.30 7.67 170 261 0.3305

And 91.74 111.92 20.18 183 281 0.3873

Incl. 96.70 107.66 10.96 214 328 0.4555

CL21051 90.45 98.65 8.20 177 271 0.3197

And 104.64 121.80 17.16 182 279 0.3218

And 131.00 156.71 25.71 208 319 0.3481

incl. 131.00 137.95 6.95 240 368 0.3942

CL21052 55.95 155.75 99.80 195 299 0.3417

incl. 100.50 117.00 16.50 217 333 0.3710

And incl. 119.30 143.50 24.20 216 331 0.3665

CL21053 44.56 53.28 8.72 188 288 0.3720

And 58.40 63.67 5.27 196 301 0.4239

NOTES: - 1 ppm of Sc metal equals 1.5338 ppm scandium oxide ( Sc2O3) ; 1 g/t equals 1 ppm. TREO+Y

includes oxides of La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu plus Y.

QA-QC Protocol

Strict QA/QC protocols have been implemented for the Crater Lake Project, including the insertion of

certified reference materials (standards), duplicates and blanks at regular intervals throughout the sequence

of samples.

A total of 726 samples, including 43 QA-QC samples, were sent to an analytical laboratory. All sample

preparation and analytical work was carried out by Actlabs at their facilities in Ancaster, Ontario. Several

analytical techniques were used to characterize the samples , which are combined at Actlabs into the

analytical package “8 -REE”. This package includes whole -rock and trace element analytic techniques.

Whole Rock analyses are done via a lithium metaborate/tetraborate fusion inductively coupled plasma (ICP)

finish. Trace elements are also analyzed by fusion ICP/MS.

The technical content in this press release was prepared, reviewed and certified by Pierre Guay, P. Geo.,

Imperial's Vice-President, Exploration, a Geologist and Qualified Person as defined by NI43-101.

Table 2 – Borehole Location Table – Crater Lake Project, Quebec

Borehole

Number Section Easting Northing

Elevation

(m) Azimuth Dip Length (m)

CL21040 550N 440895 6133765 548 305 -47 117.0

CL21041 500N 440823 6133748 550 305 -45 50.3

CL21042 550N 440937 6133733 542 305 -50 213.9

CL21043 550N 440867 6133786 551 305 -47 69.9

CL21044 450N 440826 6133687 543 305 -47 186.8

CL21045 450N 440792 6133711 548 305 -45 108.0

CL21046 400N 440783 6133660 543 305 -47 190.0

CL21047 400N 440757 6133678 547 305 -45 126.0

CL21048 600N 440960 6133782 545 305 -47 208.0

CL21049 600N 440930 6133802 548 305 -45 133.8

CL21050 350N 440745 6133608 541 305 -47 151.0

CL21051 650N 440987 6133824 545 305 -47 182.9

CL21052 600N 440841 6133853 561 125 -55 229.0

CL21053 650N 440951 6133855 553 305 -47 118.2

Total 2084.8

* Borehole Coordinate Datum : NAD83 Zone 20N

ABOUT IMPERIAL MINING GROUP LTD.

Imperial is a Canadian mineral exploration and development company focused on the advancement of its technology

metals projects in Québec. Imperial is publicly listed on the TSX Venture Exchange as “IPG” and on the OTCQB

Exchange as “IMPNF” and is led by an experienced team of mineral exploration and development professionals with

a strong track record of mineral deposit discovery in numerous metal commodities.

For further information please contact:

Peter J. Cashin

President and Chief Executive Officer

Phone: +1 (514) 360-0571

Email: [email protected]

CHF Capital Markets

Iryna Zheliasko, Manager-Corporate Communications

Phone: +1 (416) 868-1079 x229

Email: [email protected]

Website: www.imperialmgp.com Twitter: @imperial_mining Facebook: Imperial Mining Group

This press release may contain forward -looking statements relating to the Company’s operations or to its business environment.

Such statements are based on the Company’s operations, estimates, forecasts, and projections, but are not guarantees of future

performance and involve risks and uncertainties that are difficult to predict or control. Several factors could cause actual outcomes

and results to differ materially from those expressed. These factors include those set forth in the corporate filings. Although any

such forward-looking statements are based upon what management believes to be reasonable assumptions, the Company cannot

guarantee that act ual results will be consistent with these forward -looking statements. In addition, the Company disclaims any

intention or obligation to update or revise any forward -looking statements, for any reason. We also do not commit in any way to

guarantee that we w ill continue reporting on items or issues that arise. Investors are cautioned that this press release contains

quoted historical exploration results. These are derived from filed assessment reports and compiled from governmental databases.

The Company and a QP have not independently verified and make no representations as to the accuracy of historical exploration

results: these results should not be relied upon. Selected highlight results may not be indicative of average grades.

Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture

Exchange) accepts responsibility for the adequacy or accuracy of this release.

Figure 1 – Crater Lake Drillhole Location Map

Figure 2 – Diamond Drill Cross-Section 400N, TG Zone, Crater Lake Project, Quebec

Figure 3 – Diamond Drill Cross-Section 600N, TG Zone, Crater Lake Project, Quebec